Honda isn’t rewriting the book on its 250cc off-roaders, but it is adding in some updates that should make them a little better. The company will add twin spark technology to the engines of the ...

The compression ratio is 11:1, the stroke is 82 mm and the bore 88 mm. The soul of the engine is the innovative pre-chamber combustion system featuring twin-spark plugs. This technology is derived ...

Given their need for compact packaging, motorcycle engines tend to have few cylinders — most commonly one or two. While one-cylinder or thumper engines are small, easy to maintain, and relatively fuel ...

BorgWarner Turbo Systems says it has developed a new ‘K04 Twin-Scroll turbocharger’ which will be used for the first time in a spark-ignition engine with direct fuel injection and turbocharging. The ...

The 156 has a powerful stance emphasised by its muscular shoulders and bold front and rear treatments. The 156's heartbeat came from a 2.0-litre double overhead camshaft four-cylinder engine with twin ...